Windows 7 OEM System Locked Preinstallation Activation

Code of Authenticity (CoA) and Windows (OEM) Sticker

Systems manufactured before 2012 were sold with a Windows 7 CoA. This contained the Edition of Windows 7 and a 25 Digit Product Key.

Systems sold after 2012 have the following sticker to identify that they have a Windows OEM License.

What is OEM System Locked Preinstallation?

Original Equipment Manufacturers like Dell preinstall Windows on millions of Devices. In order to avoid having to manually type an alpha-numeric 25 digit product key and calling Microsoft for Product Activation on every single computer they manufacture they activate their devices using a different mechanism called OEM System Locked Preinstallation (OEM SLP).

MSDM – Microsoft Digital Marker

For systems sold with Windows 8 OEM and Windows 10 OEM the 25 digit product key is not seen printed on a label but is embedded in the MSDM table of the UEFI BIOS. Windows 10 Installation Media downloadable from Microsoft will automatically input these product keys during installation and as it’s multi-edition it will automatically select the correct Edition corresponding to the Windows Product Key. Although most people shouldn’t need to, one can check if they have a MSDM by installing RWEverything. The ACPI tables should load by default (if not select Access → ACPI Tables).

SLIC – System License Internal Code

For Windows 7, the 25 digit product key was printed on a CoA but it is typically not used during Windows 7 Installation. Instead Windows 7 is activated from Factory using OEM System Locked Preinstallation. For Windows 7 OEM SLP three things are required:

  • The System has a SLIC Version of 2.1
  • The Installation Media Inputs:
    • A xrm-ms File.
    • A Generic OEM SLP Key (Generic for the OEM e.g. Dell and the Edition of Windows 7 e.g. Professional).

If all three requirements are satisfied OEM SLP is applied. Although most people shouldn’t need to, one can check if they have a SLIC by installing RWEverything. The ACPI tables should load by default (if not select Access → ACPI Tables).

A SLIC Version of 1.0 is for Windows XP, a SLIC Version of 2.0 is for Windows Vista and a SLIC Version of 2.1 is for Windows 7. Systems shipped with Windows 8.1 Pro and Windows 10 Pro will have a SLIC Version of 2.1 in addition to the MDSM because they are eligible for OEM Downgrade Rights to Windows 7 Pro OEM.

Installation Media

  • Windows 10 (Version 1511 and Later)
    • Accepts Windows 10 MSDM
    • Accepts Windows 8.1 MSDM and Windows 8 MSDM
    • Accepts Windows 7 CoA Key
      • One Time Activation Use
      • System Motherboard Hardware Profile Registered with a Microsoft Product Activation Server No Key Required for Reinstall
    • Does Not Activate from a Clean Install using the SLIC
      • Upgrade Install from SLIC Works
      • Genuine Ticket Generated on Windows 7 Activated SLIC Works
  • Windows 7 OEM Media
    • Major OEM Media e.g. Dell Activates Using the OEM SLP
      • Has a sources\$OEM$\$$\system32\OEM folder which contains the OEM.xrm-ms file.
      • Has a sources\$OEM$\$$\setup\scripts folder which contains an OOBE script and SLP script.

The Out of the Box Experience (OOBE) script calls the System Locked Preinstallation Script (SLP) script. The SLP script has two lines the first line installs the OEM.xrm-ms file and the second line inputs the generic OEM SLP key. This is the key for Dell Windows 7 Professional.

This is the SLP script from a Dell unmodified Dell Windows 7 Professional Reinstallation ISO:


Windows 7 Retail Media or System Builder OEM Media does not contain an $OEM$ folder and will not apply OEM SLP and will instead ask for a Retail Product Key During Installation. This has caused a lot of confusion regarding OEM SLP.

Applying Windows 7 OEM SLP Using Retail Media

Retail Installation Media asks for a Product Key During Installation. We can uncheck “Automatically Activate Windows when I’m Online”.

Post Installation we can apply the OEM System Locked Preinstallation. Download the following:

Extract, select your OEM and then Edition of Windows 7. Copy the OEM folder directly to the C:\Drive. Right click the SLP.cmd file and select run as administrator, this will apply OEM SLP as per the factory settings.

The slp.cmd script for Dell Windows 7 Professional is shown below. Note the OEM folder must be copied to the C:\ Drive directly so the script can find the OEM.xrm-ms file.


OEM SLP Key Collection – For Information Only

Many people on forums are instructed to use key finders to find their OEM Product Key and instead will find the OEM SLP key and fail to activate using it. These keys will only activate using OEM SLP, they do not activate using the activation methods of Retail Product Keys.

Note the first 5 digits of the Product ID listed below will differ corresponding to the language installed.


EditionProduct IDOEM SLP Key
Windows 7 Starter xxxxx-OEM -8992707-00082 36Q3Y-BBT84-MGJ3H-FT7VD-FG72J
Windows 7 Home Basic xxxxx-OEM-8992752-50258
Windows 7 Home Premium xxxxx-OEM-8992687-00095 6RBBT-F8VPQ-QCPVQ-KHRB8-RMV82
Windows 7 Professional xxxxx-OEM-8992671-00524 32KD2-K9CTF-M3DJT-4J3WC-733WD
Windows 7 Ultimate xxxxx -OEM-8992662-00400 342DG-6YJR8-X92GV-V7DCV-P4K27
Windows Vista Home Basic xxxxx-OEM-7332166-00096 3YMR2-WMV49-4WD8X-M9WM7-CH4CG
Windows Vista Home Premium xxxxx-OEM-7332157-00204 4GPTT-6RYC4-F4GJK-KG77H-B9HD2
Windows Vista Business xxxxx-OEM-7332141-00054 368Y7-49YMQ-VRCTY-3V3RH-WRMG7
Windows Vista Ultimate xxxxx-OEM-7332132-00141 2QBP3-289MF-9364X-37XGX-24W6P
EditionProduct IDOEM SLP Key
Windows 7 Home Premium xxxxx-OEM-8992687-00008 V3Y2W-CMF9W-PGT9C-777KD-32W74
Windows 7 Professional xxxxx-OEM-8992671-00188 4CFBX-7HQ6R-3JYWF-72GXP-4MV6W
Windows 7 Ultimate xxxxx-OEM-8992662-00008


Edition Product ID OEM SLP Key
Windows 7 Starterxxxxx-OEM-8992752-30169


Windows 7 Home Basicxxxxx-OEM-8992752-50213 22MFQ-HDH7V-RBV79-QMVK9-PTMXQ
Windows 7 Home Premium xxxxx-OEM-8992687-00249 27GBM-Y4QQC-JKHXW-D9W83-FJQKD
Windows 7 Professional xxxxx-OEM-8992671-00437


Windows 7 Ultimatexxxxx-OEM-8992662-00537 6K2KY-BFH24-PJW6W-9GK29-TMPWP


EditionProduct IDOEM SLP Key
Windows Vista Starterxxxxx-OEM-7332204-00603 223JH-DDMFR-3WBTR-H3V93-28JK8
Windows Vista Home Basicxxxxx-OEM-7332166-00021 2VX48-BVXT6-GD2PK-BD3R2-44MV3
Windows Vista Home Premium xxxxx-OEM-7332157-00174 HW7V9-XYT4W-PFR9Q-2DKGJ-RR4TD
Windows Vista Businessxxxxx-OEM-7332141-00039 2Q2WM-VCB98-8C6BG-C9BT2-3XDRY
Windows Vista Ultimatexxxxx-OEM-7332132-00015 23CM9-P7MYR-VFWRT-JGH7R-R933G
Windows 7 Starterxxxxx-OEM-8992752-30008 RH98C-M9PW4-6DHR7-X99PJ-3FGDB
Windows 7 Home Basicxxxxx-OEM-8992752-50008 DX8R9-BVCGB-PPKRR-8J7T4-TJHTH
Windows 7 Home Premiumxxxxx-OEM-8992687-00010 4FG99-BC3HD-73CQT-WMF7J-3Q6C9
Windows 7 Professionalxxxxx-OEM-8992671-00008 74T2M-DKDBC-788W3-H689G-6P6GT
Windows 7 Ultimatexxxxx-OEM-8992662-00010 MHFPT-8C8M2-V9488-FGM44-2C9T3


EditionProduct IDOEM SLP Key
Windows 7 Starterxxxxx-OEM-8992752-30005 6K6WB-X73TD-KG794-FJYHG-YCJVG
Windows 7 Home Basicxxxxx-OEM-8992752-50005 89G97-VYHYT-Y6G8H-PJXV6-77GQM
Windows 7 Home Premiumxxxxx-OEM-8992687-00007


Windows 7 Professionalxxxxx-OEM-8992671-00407 2WCJK-R8B4Y-CWRF2-TRJKB-PV9HW
Windows 7 Ultimatexxxxx-OEM-8992662-00173 2Y4WT-DHTBF-Q6MMK-KYK6X-VKM6G


EditionProduct IDOEM SLP Key
Windows 7 Starterxxxxx-OEM-8992752-30004RDJXR-3M32B-FJT32-QMPGB-GCFF6
Windows 7 Home Basicxxxxx-OEM-8992752-50004  MB4HF-2Q8V3-W88WR-K7287-2H4CP
Windows 7 Home Premiumxxxxx-OEM-8992687-00006  VQB3X-Q3KP8-WJ2H8-R6B6D-7QJB7
Windows 7 Professionalxxxxx-OEM-8992671-00004  YKHFT-KW986-GK4PY-FDWYH-7TP9F
Windows 7 Ultimatexxxxx-OEM-8992662-00006  FJGCP-4DFJD-GJY49-VJBQ7-HYRR2


EditionProduct IDOEM SLP Key
Windows 7 Starterxxxxx-OEM-8992752-30013 PV9BD-YBRX6-CTMG6-CCMJY-X8XG7
Windows 7 Home Basicxxxxx-OEM-8992752-50013 2P6PB-G7YVY-W46VJ-BXJ36-PGGTG
Windows 7 Home Premiumxxxxx-OEM-8992687-00015 CQBVJ-9J697-PWB9R-4K7W4-2BT4J
Windows 7 Professionalxxxxx-OEM-8992671-00013 GMJQF-JC7VC-76HMH-M4RKY-V4HX6
Windows 7 Ultimatexxxxx-OEM-8992662-0001549PB6-6BJ6Y-KHGCQ-7DDY6-TF7CD


EditionProduct IDOEM SLP Key
Windows 7 Starterxxxxx-OEM-8992707-00016 32J2V-TGQCY-9QJXP-Q3FVT-X8BQ
Windows 7 Home Basicxxxxx-OEM-8992752-50014 YV7QQ-RCXQ9-KTBHC-YX3FG-FKRW8
Windows 7 Home Premiumxxxxx-OEM-8992687-00016 H4JWX-WHKWT-VGV87-C7XPK-CGKHQ
Windows 7 Professionalxxxxx-OEM-8992671-00014 H9M26-6BXJP-XXFCY-7BR4V-24X8
Windows 7 Ultimatexxxxx-OEM-8992662-00016 YJJYR-666KV-8T4YH-KM9TB-4PY2W


EditionProduct IDOEM SLP Key
Windows 7 Starterxxxxx-OEM-8992752-30015 TGBKB-9KBGJ-3Y3J6-K8M2F-J2HJQ
Windows 7 Home Basicxxxxx-OEM-8992752-50015 9H4FH-VD69Y-TGBD2-4PM4K-DRMMH
Windows 7 Home Premiumxxxxx-OEM-8992687-00057


Windows 7 Professionalxxxxx-OEM-8992671-00137


Windows 7 Ultimatexxxxx-OEM-8992662-00459 2XQ63-J3P67-9G3JC-FHQ68-8Q2F3


EditionProduct IDOEM SLP Key
Windows 7 Starterxxxxx-OEM-8992707-00121


Windows 7 Home Basicxxxxx-OEM-8992752-50179 2TY7W-H4DD4-MB62F-BD9C3-88TM6
Windows 7 Home Premiumxxxxx-OEM-8992687-00246 4G3GR-J6JDJ-D96PV-T9B9D-M8X2Q
Windows 7 Professionalxxxxx-OEM-8992671-00503 2W3CX-YD4YJ-DF9B2-V27M6-77GMF


EditionProduct IDOEM SLP Key
Windows 7 Starterxxxxx-OEM-8992752-30007  PMXH9-M23P9-QJJMB-2FWRC-7CDKP
Windows 7 Home Basicxxxxx-OEM-8992752-50007 8W3JQ-BP2HY-F47QX-6CQ94-2BKQB
Windows 7 Home Premiumxxxxx-OEM-8992687-00009 C6MHH-TRRPT-74TDC-FHRMV-XB88W
Windows 7 Professionalxxxxx-OEM-8992671-00007 PT9YK-BC2J9-WWYF9-R9DCR-QB9CK
Windows 7 Ultimatexxxxx-OEM-8992662-00009 9CW99-79BBF-D4M3X-9BK9M-4RPH9